Over-Sanding Spots

If a painting project is in your future, you'll want to patch any holes or cracks in the drywall with joint compound and sand it smooth before applying a new color. Although we've been conditioned to believe that "more is better," when it comes to sanding, that's not the case. Avoid sanding in a straight line or going over the same area in the same direction, as this can leave grooves or depressions. Move the sander around in a curved motion, and be careful not to apply too much pressure.